high
7.8
CWE
416
Advisory Published
CVE Published
CVE Published
Updated

CVE-2022-2585: Use After Free

First published: Wed Aug 03 2022(Updated: )

A use-after-free flaw was found in the Linux kernel’s POSIX CPU timers functionality in the way a user creates and then deletes the timer in the non-leader thread of the program. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Credit: security@ubuntu.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<0:5.14.0-70.30.1.el9_0
0:5.14.0-70.30.1.el9_0
redhat/kernel-rt<0:5.14.0-70.30.1.rt21.102.el9_0
0:5.14.0-70.30.1.rt21.102.el9_0
redhat/kernel<6.0
6.0
Linux kernel>=5.7<5.10.137
Linux kernel>=5.11<5.15.61
Linux kernel>=5.16<5.18.18
Linux kernel>=5.19<5.19.2
Ubuntu Linux=20.04
Ubuntu Linux=22.04
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.20-1
6.12.21-1

Remedy

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Remedy

https://lore.kernel.org/lkml/20220809170751.164716-1-cascardo@canonical.com/T/#u

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2022-2585?

    CVE-2022-2585 is considered to have a high severity due to its potential for privilege escalation and system crashes.

  • How do I fix CVE-2022-2585?

    To address CVE-2022-2585, update your kernel to the latest available version as specified in the vulnerability report.

  • Which systems are vulnerable to CVE-2022-2585?

    CVE-2022-2585 affects various versions of the Linux kernel, specifically versions between 5.7 and 5.19.

  • Can CVE-2022-2585 be exploited remotely?

    CVE-2022-2585 requires local access for exploitation, making it less of a remote threat but still critical for local users.

  • Is there a workaround for CVE-2022-2585?

    Currently, the recommended approach is to apply the latest patches instead of relying on any workarounds for CVE-2022-2585.

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